An antifreeze liquid level gauge device for water boiler jacket
A technology of antifreeze and liquid level gauge, applied in the field of liquid level gauge, can solve the problems of poor heating efficiency of water jacket furnace, freezing blockage, oil and water freezing in pipelines, etc., so as to avoid freezing blockage and ensure no freezing effect
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Embodiment 1
[0053] Take 60 parts of polymethylene polyphenyl isocyanate, 30 parts of phenylenediamine polyether polyol, 36 parts of polyester ether polyol, 25 parts of catalyst, 20 parts of cyclopentane, 2.5 parts of surfactant, 2 parts of deionized water 1 part, 4 parts of physical foaming agent were mixed evenly in a stirring tank at 25°C with a stirring speed of 2800pm / min, and the resulting product was poured into a mold with a temperature of 45°C and allowed to stand for 3 to 4 minutes until the polymerization reaction was completed, that is Obtain the insulation material of the present invention.
[0054] The thermal insulation material of the present invention is prepared through polymerization reaction.
Embodiment 2
[0056] Take 60 parts of polymethylene polyphenyl isocyanate, 40 parts of phenylenediamine polyether polyol, 30 parts of polyester ether polyol, 15 parts of catalyst, 15 parts of cyclopentane, 2 parts of surfactant, 1.5 parts of deionized water 1 part, 4 parts of physical foaming agent were mixed evenly in a stirring tank at 25°C with a stirring speed of 2800pm / min, and the resulting product was poured into a mold with a temperature of 45°C and allowed to stand for 3 to 4 minutes until the polymerization reaction was completed, that is Obtain the insulation material of the present invention.
Embodiment 3
[0058] Take 60 parts of polymethylene polyphenyl isocyanate, 30 parts of phenylenediamine polyether polyol, 38 parts of polyester ether polyol, 25 parts of catalyst, 20 parts of cyclopentane, 2.5 parts of surfactant, 2 parts of deionized water 1 part, 4 parts of physical foaming agent were mixed evenly in a stirring tank at 25°C with a stirring speed of 2800pm / min, and the resulting product was poured into a mold with a temperature of 45°C and allowed to stand for 3 to 4 minutes until the polymerization reaction was completed, that is Obtain the insulation material of the present invention.
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